Projector turns on, displays Brookstone logo and then turns off. It's not the power; the unit is plugged in.

Question edited to correct the written English.

The internal battery has failed and need replacing. They don't like being left for a long time with no power.

https://www.google.com/search?q=Brookstone+HDMI+890574+replacement+battery

..

Change the batteries for brand new Duracell batteries.

https://www.projectorcentral.com/Brookstone_hdmi_pico_projector_review.htm


Pocket Projector Mobile includes an HDMI® compatible cable, MHL cable, 5- to 11-pin adapter and AC adapter. To connect to any device without an HDMI® compatible port, you will need an HDMI® compatible adapter or Apple Digital AV adapter (sold separately). Your device: ... Apple® iPad®, iPhone® and iPod touch® devices.

Brookstone Pocket Projector - Good Dog Digital

THE UNDERLYING BATTERY THAT IS WITHIN THE UNIT IS TOAST

The Brookstone manual claims it will fully charge after 3-5 hours, but it takes much longer then that. Mine does not indicate green light, but it seems it stops blinking red when its fully charged. After that it run on power directly from the ac-adapter.

If you keep it connected to the AC-adapter after it have stopped blinking red (do not disconnect it at all), it will start to run on the adapter and will not turn off. You will feel the AC-adapter gets hot while its running, something it does not while regular charging.

If it still dont stop blinking red after having it connected to power for 3 days, your AC-adapter is probably faulty. This happened to me, and after allot of research I found this replacement from a US seller on ebay (only five dollars included shipping).

http://www.ebay.com/itm/251623019268?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Good luck with your projector. It a really cool little thing, but it has some design flaws.

Best regards.

i'm having the same issue. it 1st started with a No Signal error. then this started...ugh!

you might need to turn off your computer .
then connect the data projector
and turn on data projector
then turn on computer
hopefully it detects the data projector is connected and switches windows to duplicate projection
On my P.C. F4 key in windows Switches the display manually to duplicate, alternate screen or pc screen only or projector screen only.
As I am not familiar with Apple this support article below might explain the switching of display outputs available on Apple Mac.
https://support.apple.com/en-au/HT202351

The blinking green light means the unit is either Powering On (Warming Up) or Powering Off (Cooling Down).

Powering On the Projector
1. Remove the lens cap.
2. Securely connect the power cord and signal cable. When connected, the ON/STANDBY LED will turn Amber.
3. Turn on the lamp by pressing " " button either on the top of the projector or on the remote. The ON/STANDBY LED will now turn Green. The startup screen will display in approximately 10 seconds. The first time you use the projector, you can select your preferred language from quick menu after the startup screen displays.
4. Turn on and connect the source that you want to display on the screen (computer, notebook, video player, etc). The projector will detect the source automatically. If not, push menu button and go to "SETUP". Make sure that the "Source Lock" has been set to "Off". If you connect multiple sources at the same time, press the "SOURCE" button on the control panel or direct source keys on the remote control to switch between inputs.

If you are still unable to get the unit to turn on, try unplugging it for 10 minutes and plugging it back in. If it still ceases to work, contact Optoma here: http://www.optomausa.com/rma_policy.asp
Their Technical Support line is 1-888-887-5001

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

replaced the lamp

The problem you're describing is a classic symptom of a defective fan--some fans simply have + and - power connections. However, other fans have a third, yellow wire, for sending a pulse to the main board to tell it that the fan is indeed running. If the main board doesn't get the signal, it's internal programming instructions perform a shutdown in case of any error condition--protects the unit against excessive heat, current draw, etc. MAKE SURE THE DUST FILTER IS CLEAN! A dirty filter causes the fan to pull harder, increasing current draw, possibly triggering the symptom. The other possibility is a defective power supply causing an over-current condition. Again, the main board senses this and cues a shutdown. You'll need to send the unit out to a repair facility to confirm a diagnosis. Any reputable shop will give you a quote first with an explanation of the problem.